101142204123 has 16 divisors (see below), whose sum is σ = 142835771520. Its totient is φ = 63440985216.

The previous prime is 101142204113. The next prime is 101142204127. The reversal of 101142204123 is 321402241101.

It is not a de Polignac number, because 101142204123 - 2²⁶ = 101075095259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101142204123.

It is not an unprimeable number, because it can be changed into a prime (101142204127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166893 + ... + 479726.

It is an arithmetic number, because the mean of its divisors is an integer number (8927235720).

Almost surely, 2^101142204123 is an apocalyptic number.

101142204123 is a deficient number, since it is larger than the sum of its proper divisors (41693567397).

101142204123 is a wasteful number, since it uses less digits than its factorization.

101142204123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649706.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 101142204123 its reverse (321402241101), we get a palindrome (422544445224).

The spelling of 101142204123 in words is "one hundred one billion, one hundred forty-two million, two hundred four thousand, one hundred twenty-three".